body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #121212;
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #e0e0e0;
}

.container {
    text-align: center;
    padding: 20px;
    background: #1e1e1e;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    border-radius: 10px;
}

h1 {
    margin-bottom: 20px;
    font-size: 2rem;
    color: #ffffff;
}

.board {
    display: grid;
    grid-template-columns: repeat(3, 100px);
    grid-template-rows: repeat(3, 100px);
    gap: 10px;
    margin-bottom: 20px;
}

.cell {
    width: 100px;
    height: 100px;
    background-color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.5rem;
    font-weight: bold;
    cursor: pointer;
    border-radius: 10px;
    transition: background-color 0.3s, transform 0.3s;
    color: #ffffff;
}

.cell:hover {
    background-color: #444;
    transform: scale(1.05);
}

.cell.x {
    color: #f44336;
}

.cell.o {
    color: #2196f3;
}

button {
    padding: 10px 20px;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    background-color: #4caf50;
    color: #ffffff;
    border-radius: 5px;
    transition: background-color 0.3s, transform 0.3s;
}

button:hover {
    background-color: #45a049;
    transform: scale(1.05);
}

#message {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #e0e0e0;
}

.scoreboard {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 1.2rem;
}
#credit {
    position: absolute;
    bottom: 10px;
    right: 10px;
    font-size: 0.8rem;
    color: #bdbdbd;
}